TRICHOSTEMA LABIATZ 547 
TEUCRIUM 
1 TRICHOSTEMA L. Sp. 598. 
Annual or perennial erect branching herbs or suffrutescent 
plants with entire or slightly repand leaves and small or middle- 
sized, mostly blue, flowers, paniculate or in axillary loose or 
dense cymes. Calyx campanulate, very unequally or almost 
equally 5-lobed. Corolla with narrow tube and more or less ob- 
lique limb; the somewhat similar lobes oblong and more or less 
declined. Stamens 4, with long filaments that are spirally coiled 
in the unopened limb, at length long-exserted, and divaricate or 
divergent! anther-cells. Ovary deeply 4-lobed. Amphitropous 
ovules and seeds ascending, being attached below the middle. 
T. oblongum Benth. Lab. 659. Soft-villous throughout; stem simple 
or branching from the base, 2-12 inches high from an annual root: leaves 
oblong*or oval, with narrowed base, an inch or less lung, membranaceous, 
costate-veined : flowers in short glomerate cymules shorter than the leaves: 
calyx nearly equally 5-parted, its lanceolate acuminate lobes about 3 lines 
long, much longer than the tube: corolla blue, inconspicuous, its tube not 
surpassing the calyx: filaments blue, long-exserted. In moist places, 
western Washington to California. 
T. laxum Gray Proc. Am. Acad. vii, 387. Minutely soft-pubescent 
annual: stem 6-14 inches high, simple or loosely branched: leaves rather 
distant, ianceolate and oblong-lanceolate, acuminate, 1-2 inches long,rather 
obscurely pinnately veined tapering at base, mostly into a slender petiole: 
flowers in rather loose often forked long-peduncled cymules: pedicels a line 
long: calyx campanulate, about 2 lines long, its equal ovate-triangular 
acute lobes longer than the tube: corolla blue, 3-4 lines long, almost glab- 
rous: stamens 6-8 lines long. On gravelly bars along streams, southern 
Oregon to California. 
- , lanceolatum Benth. l..c. Cinereous-pubescent or villous annual: 
stem 6-12 inches high, rather sparingly branched, very leafy: leaves much 
longer than the internodes, ovate-lanceolate to lanceolate, narrowed below 
to a very short petiole or sessile, acute and minutely cuspidate, strongly 
nerved: flowers in small sessile or very short-peduncled cymules much 
shorter than the leaves: pedicels a line or two long: calyx campanulate, 
about 2 lines long, its triangular-ovate acute lobes longer than the tabe: 
corolla blue, 6 lines long, the tube almost filiform, somewhat pubescent. 
Common in dry ground, western Oregon to California. 
2. TEUCRIUM L. Sp. 562. 
Herbs or shrubs with dentate or entire leaves and rather small 
pink, white or purplish flowers in terminal bracted spikes or 
heads, or verticillate in the upperaxils. Calyx campanulate. 10- 
nerved, equally or unequally 5-toothed. Corolla-tube short, the 
limb irregularly 5-lobed, the two short upper lobes oblong, erect 
or declined, the lateral lobes more or less united with the upper 
ones, the lower lobe larger, declined. Stamens 4, exserted betw- 
een the two upper lobes of the corolla, the anterior pair longest. 
Anther-cells divergent, confluent at base. Nutlets obovoid, ru- 
gose-reticulated, with a broad introrse areola. 
TY. occidentale Gray Syn. FI. ii, 349. Villous or pubescent perennial: 
stem erect rather stout, usually much branched, 1-3 feet high, the branches 
ascending: leaves lanceolate or ovate-lanceolate, thin, acute or acuminate 
